karma+webpack+typescript+jasmine

1.安装依赖包：
npm install karma-jasmine karma-chrome-launcher jasmine-core karma-cli --save-dev；// karma 框架所需依赖包
npm install --save-dev jasmine； // 安装jasmine
npm install --save-dev typescript ts-loader；
npm install --save-dev webpack;
npm install --save-dev karma-webpack;
2.在项目根目录下创建typescript 配置文件 tsconfig.json:

{
  "compilerOptions": {
    "outDir": "./dist/",
    "sourceMap": true,
    "noImplicitAny": true,
    "module": "commonjs",
    "target": "es5",
    "jsx": "react",
    "allowJs": true
  }
}

3.在项目根目录下创建karma 配置文件karma.conf.js：

// Karma configuration
// Generated on Tue Jun 04 2019 21:20:40 GMT+0800 (CST)

module.exports = function(config) {
  config.set({

    // base path that will be used to resolve all patterns (eg. files, exclude)
    basePath: '',


    // frameworks to use
    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
    frameworks: ['jasmine'],


    // list of files / patterns to load in the browser
    files: [
      'test/**/*.Spec.ts'
    ],


    // list of files / patterns to exclude
    exclude: [
    ],


    // preprocess matching files before serving them to the browser
    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
    preprocessors: {
      'test/**/*.Spec.ts': 'webpack'
    },

    webpack: {
      module: {
        rules: [
          {
            test: /\.ts$/,
            loader: 'ts-loader'
          }
        ]
      },
      resolve: {
        extensions: ['.ts']
      }
    },

    // test results reporter to use
    // possible values: 'dots', 'progress'
    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
    reporters: ['progress'],


    // web server port
    port: 9876,


    // enable / disable colors in the output (reporters and logs)
    colors: true,


    // level of logging
    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
    logLevel: config.LOG_INFO,


    // enable / disable watching file and executing tests whenever any file changes
    autoWatch: true,


    // start these browsers
    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
    browsers: ['Chrome'],


    // Continuous Integration mode
    // if true, Karma captures browsers, runs the tests and exits
    singleRun: false,

    // Concurrency level
    // how many browser should be started simultaneous
    concurrency: Infinity
  })
}